Industrial Automation Solution – Schneider Electric TM2DOCKN | Modicon M238 Expansion Series
Where This Product Is Used
The Schneider Electric TM2DOCKN is an expansion adaptor module designed to connect Modicon TM2 I/O expansion modules to the Modicon M238 PLC controller platform. It is widely deployed across the following industrial environments:
- Machine Automation – OEM machine builders integrating M238 controllers with distributed I/O racks
- Packaging Lines – High-speed packaging equipment requiring modular I/O expansion without rewiring
- HVAC & Building Automation – BMS controllers needing additional digital/analog I/O points
- Water & Wastewater Treatment – Remote pump station panels with compact PLC footprints
- Food & Beverage Processing – Hygienic production lines using M238 as the primary logic controller
- Material Handling & Conveyor Systems – Distributed control architectures requiring scalable I/O
Technical Specifications
| Attribute | Value |
|---|---|
| Part Number / SKU | TM2DOCKN |
| Product Series | Modicon M238 / TM2 Expansion |
| Manufacturer | Schneider Electric |
| Module Type | Expansion Adaptor Module |
| Compatible Controller | Modicon M238 (TM238 series) |
| Compatible I/O Modules | Modicon TM2 series expansion modules |
| Mounting | DIN rail |
| Communication Interface | Internal TM2 bus connector |
| Weight | 200 g (approx.) |
| Certifications | CE, UL, cUL, RoHS |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -25 °C to +70 °C |
| Relative Humidity | 10% to 95% non-condensing |
| Degree of Protection | IP20 |
Why Engineers Specify This Model
- Seamless M238 Integration – Purpose-built adaptor that bridges the M238 controller bus to the TM2 I/O expansion bus without additional wiring harnesses
- Compact DIN-Rail Form Factor – Minimises panel footprint while enabling scalable I/O expansion up to the M238 platform limits
- Plug-and-Play Compatibility – Recognised automatically by SoMachine / EcoStruxure Machine Expert; no additional configuration required
- Proven Reliability – Schneider Electric’s Modicon platform is trusted in millions of installed machines globally across harsh industrial environments
- Reduced Engineering Time – Standardised connector eliminates custom cabling, reducing panel build time and commissioning errors
Complete System Bill of Materials
For a complete M238 + TM2 expansion system, engineers typically specify the following alongside the TM2DOCKN:
- TM238LFDC24DT – Modicon M238 Logic Controller (24 VDC, 24 I/O)
- TM2DDI8DT – TM2 8-channel digital input module
- TM2DDO8TT – TM2 8-channel digital output module (transistor)
- TM2AMI2HT – TM2 2-channel analog input module (high-speed)
- TM2AMO1HT – TM2 1-channel analog output module
- ABLS1A24031 – Schneider 24 VDC / 3.1 A power supply for I/O rail
- AM1DE200 – DIN rail end stop / retaining clip
Compliance & Industry Standards
- CE Marking – EU Low Voltage Directive & EMC Directive compliant
- UL 508 / cUL – Industrial Control Equipment (North America)
- RoHS 2011/65/EU – Restriction of Hazardous Substances compliant
- IEC 61131-2 – Programmable Controllers: Equipment Requirements & Tests
- EN 61000-6-2 / EN 61000-6-4 – Industrial EMC immunity & emission standards
Quality Assurance & Sourcing
All units supplied by Konmask.com are:
- Sourced from authorised Schneider Electric distribution channels or verified surplus stock
- Inspected for physical integrity, label authenticity, and original packaging prior to dispatch
- Shipped with original manufacturer documentation where available
- Backed by Konmask’s quality guarantee — contact us within 30 days for any quality concerns
How to Source This Part
- Submit a Request for Quote (RFQ) via konmask.com/pages/contact or email support@konmask.com
- Provide your required quantity, delivery timeline, and destination country
- Receive a competitive quote within 1 business day
- Confirm order — we handle export documentation, customs HS codes, and international freight
We ship globally from China. Lead time: 3–7 business days for in-stock units.
Application-Specific FAQ
Q: Is TM2DOCKN compatible with the Modicon M241 or M251 controllers?
A: No. The TM2DOCKN is specifically designed for the Modicon M238 platform. For M241/M251, Schneider Electric offers the TM3 expansion bus adaptor series.
Q: How many TM2 modules can be connected via one TM2DOCKN?
A: The M238 platform supports up to 7 TM2 expansion modules per adaptor, subject to the total I/O point limit of the M238 controller variant.
Q: Can TM2DOCKN be used with SoMachine Basic?
A: Yes. TM2DOCKN and the connected TM2 I/O modules are fully supported in SoMachine Basic and EcoStruxure Machine Expert – Basic.
Q: What is the maximum cable distance between the M238 and the TM2 expansion rack?
A: The TM2DOCKN connects directly to the M238 controller via the internal bus — no cable extension is supported. The expansion modules must be mounted adjacent on the same DIN rail.
Q: Do you provide a Certificate of Conformance (CoC) or test report?
A: Yes, upon request. Please specify your documentation requirements when submitting your RFQ.
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